{"id":"CVE-2025-66719","aliases":["GHSA-q7c8-gfjh-8v4p","GO-2026-5570"],"url":"https://o3.security/vulnerability/CVE-2025-66719","summary":"Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value","details":"An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.","published":"2026-01-23T00:00:00Z","modified":"2026-07-31T18:30:13.266732670Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/free5gc/nrf","fixedVersion":"1.4.1"}],"fix":{"url":"https://github.com/free5gc/nrf/pull/73","label":"free5gc/nrf#73"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66719.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66719"},{"type":"REPORT","url":"https://github.com/free5gc/free5gc/issues/736"},{"type":"FIX","url":"https://github.com/free5gc/nrf/pull/73"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:30:13.266732670Z"}}